Hello. i am having a gi trouble. when i add texture to the floor all the room turns orange. i know how to handle this kind of problems in 3dsmax but not in unity.
This is expected behaviour as the bounced light is picking up color from the floors albedo. You can use a custom meta pass to make the floor appear white from the GI systems point of view https://docs.unity3d.com/Manual/MetaPass.html